通过PHP文件基于数据的实时ajax数据 [英] live ajax data based on data through php file

问题描述

这是我的index.html文件

here is my index.html file

$(document).ready(function() {

    $.ajax({
        url: 'ajax.php',
        type: 'GET',
        dataType: "json",

        beforeSend: function() 
        {

        },
        complete: function() 
        {

        },
        success: function(result) 
        {

        $("p").html(result.price);

        $("p").live("load", function() {
            $(this).html(result.price);
        });
        }
    });
});

这是ajax.php文件(我没有放json_decode，而只是将val放进去进行测试)

and here is the ajax.php file (I didn't put json_decode and just put the val just like that for testing)

{"price":"o"}

我想做的是，如果我转到ajax.php文件并将o更改为其他内容，我希望数据自动更新并显示在索引页面上而无需刷新，但我似乎无法得到它的工作.我在做什么错了?

what I'm trying to do is if I go to the ajax.php file and change the o to something else I want the data to automatically update and display on the index page without a refresh but I can't seem to get it to work. What am I doing wrong?

推荐答案

客户端无法知道服务器上的某些内容已更改.因此，您可以通过 setInterval 函数使用定期AJAX请求:

The client has no way of knowing that something on the server has changed. So you could use periodic AJAX requests with the setInterval function:

window.setInterval(function() {
    // Every 5 seconds send an AJAX request and update the price
    $.ajax({
        url: 'ajax.php',
        type: 'GET',
        dataType: 'json',
        cache: false,
        success: function(result) {
            $('p').html(result.price);
        }
    });
}, 5000);

另一种可能性是使用按AJAX .

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